True, would be great to understand to help everyone’s mitigation. Could also be more foods wrapped in plastics, more Teflon pan usage, more seafood, geographical distribution.
Perhaps it is the use of teflon-coated rice cookers that is higher among Asians. Chinese/Korean grocery stores have high-end automatic rice cookers for sale, and all of them have layers of non-stick coating around the metal cooking insert that are much thicker than what you find on the average non-stick pan.
Maybe it's a selling feature abroad?